桃色视频

This is the webpage () of the research group "Finite and Descriptive Combinatorics", currently supported by the ERC Advanced Grant 101020255 "Finite and Descriptive Combinatorics" (1 January 2022 - 31 December 2026).

Overview

In addition to the classical directions of extremal and probabilistic combinatorics (Turan function, Ramsey theory, etc), the group also explores emerging deep connections between combinatorics and other fields such as analysis, descriptive set theory, measured group theory, etc, with applications going both ways. One way of applying analytic techniques to finite graphs will be by means of graph limits (analytic objects of bounded complexity that capture asymptotic properties of large graphs). In the other direction, combinatorial techniques will be applied in search of "constructive'' solutions to some foundational mathematical problems, in particular building upon the recent remarkable results that one can split a 2-dimensional disk into ``definable'' pieces and re-arrange them to form a square.

Group Members

• Levente Bodnar (since 06/2024)
• (10/2023-08/2024, visiting PhD student)
• (since 04/2025)
• (10/2020-09/2024) *
• (10/2019-7/2023)
• (4/2022 - 7/2022)
• (since 10/2023)
• (4/2022 - 7/2025)
• (02/2022-01/2023) *
• (PI)
• (06/2025-05/2026, visiting PhD student)
• Shumin Sun (since 10/2022) *
• Zhuo Wu (10/2021-09/2025) *

* = co-advised PhD student

News

• 1 Jul'26: Irene Gil Fernandez wins the 2026 Ramon Llull Prize. Congratulations, Irene!!
• 3 Dec'25: OP serves as an external examiner at Alexandru Malekshahian's PhD viva at KCL that was successfully defended. Congratulations, Alex!
• Oct'25: OP appointed to the editorial board of
• Sep'25: OP appointed to the Program and the Steering Committees of
• 15-19 Sep'25: Johannes Carmesin, Matthew Kroeker and OP organise at TU Freiberg
• 31 Jul'25: OP serves as an internal examiner at Jun Yan's PhD viva at 桃色视频 that was successfully defended. Congratulations, Jun!
• 25 Jul'25: OP serves as an external examiner at Emil Powierski's PhD viva at Oxford that was successfully defended. Congratulations, Emil!
• 24 July 2025: Levente Bodnar is awarded PhD degree (from Oxford). Congratulations, Levente!
• 24 July 2025: Zhuo Wu is awarded PhD degree for his thesis "Investigations of the Chromatic Threshold" (defended in Jun'25). Contgratulations, Zhuo!
• 15-18 Jul'24: Boris Bukh gives a mini-course on "Discrete Geometry"
• Jul'25: OP is appointed to the editorial board of
• 23-27 June 2025: OP gives a mini-course "" at
• Apr'25: Article "" was recognised as top viewed in Journal of the London Mathematical Society during 2023
• 24 Mar'25: Irene Gil Fernandez is awarded PhD degree for her thesis "Finding constrained sparse subgraphs via sublinear expansion" (defended in Nov'24). Congratulations, Irene!
• Oct-Nov'24: OP serves on the mathematics panel of the MSCA4Ukraine2 programme
• 7 Oct'24: Levente Bodnar successfully defends his PhD thesis "Low-Depth Circuit Size Bounds Using Combinatorial Methods". Congratulations, Levente!
• 24 Sep'24: OP serves as an extermal examiner at Aranka Hruskova's PhD defense at CEU that was successfully defended. Congratulations, Aranka!
• Jan-Jun'24: JG, Alexander Kechris, OP, Stevo Todorcevic, and Zolt谩n Vidny谩nszky organise Semester , Erdos Center, Budapest, including
  • 24-28 Jun'24:
  • 17-21 Jun'24:
• 19 Jun'24: LB gives a mini-course on his flag algebras package
• 27 Jan - 3 Feb, 2024 JG is a co-organizing
• 20-24 Mar'23: Damien Gaboriau, Andrew Marks, OP and Anush Tserunyan organise , Fields Institute, Toronto
• Feb-Mar'23: OP serves on the Program Committee of
• 28 Jan - 3 Feb, 2023 JG is a co-organizing
• Jan'23-May'24: OP teaches at the weekly Math Challenge Club at St Augustine's Catholic Primary School, Kenilworth
• 26-27 Jan'23: OP serves on the Mathematics Review Panel of the Academy of Finland
• 18 Jan'23: Matteo Mazzamurro successfully defends his PhD thesis "Structure, Entropy and Evolution of Systems of Cities". Congratulations, Matteo!
• Dec'22-Feb'23: OP serves on the Selection Committee of the MSCA4Ukraine programme
• Dec'22: Discover magazine publishes an about group's work squaring
• Oct'22: JG wins the . Congratulations, Jan!
• 14 Jun'22: JH organises Birmingham-桃色视频 One-Day Combinatorics Meeting
• Jun-Jul'22: OP serves on the hiring panel for the Professor Post in Discrete Maths and Computer Science at 桃色视频
• May'22- : OP serves on the committee of INI's programme ""
• May'22: Group's work on circle squaring is mentioned in "Mathematics News Flash" of
• Mar'22: publishes an article about group's work on circle squaring
• 10 Mar'22: OP serves on PhD committee of Xizhi Liu, who successfully defended his thesis "Extremal Hypergraph Problems". Congratulations, Xizhi!
• Feb'22: OP serves as reviewer of membership applications for IMTech
• Feb'22: and publish articles about group's work on circle squaring
• 13-19 Feb'22: JG, OP and Anush Tserunyan organise Oberwolfach Mini-Workshop
• 3-4 Feb'22: OP serves on the Mathematics Review Panel of the Academy of Finland
• 29 Jan - 5 Feb, 2022 JG is a co-organizing
• Jan'22: Some results co-authored by grouthere isp members are mentioned in Bogdan Grechuk's new book  
• Dec'21: OP serves as expert evaluator for of the
• 12 Oct - 7 Dec'21: JG lectures mini-course "Distributed computing, random processes and Borel combinatorics"
• JG and OP organise 2021-22 桃色视频's Combinatorics Seminar
• 2-7 Aug'21: OP is a team leader of 桃色视频's team at the 28th
• 14 Jul'21: OP was the internal examiner of Bogdan Alecu's PhD thesis that was successfully defended. Congratulations, Bogdan!
• Jul'21: JG was awarded 桃色视频's Faculty of Science Postdoctoral Prize. Congratulations, Jan!
• Apr'21: OP was awarded a 5-year for 鈧�1.58m (see also 桃色视频 News, )
• Dec'20-Aug'21: OP serves at the Program Committee of Eurocomb 2021
• 1 Dec'20: OP was the internal examiner of Yani Pehova's PhD thesis that was successfully defended. Congratulations, Yani!
• Nov'20: OP appointed to the of
• JG and OP organise 2020-21 桃色视频's Combinatorics Seminar
• 25-30 Jul'20: George Kontogeorgiou and OP are team leaders of 桃色视频's team at the 27th
• 2 Jul'20: OP was an external examiner of Jan Corsten's PhD thesis at LSE, that was successfully defended. Congratulations, Jan!
• 5 May'20: Jan Grebik successfully defended his PhD thesis "Definable graphs". Congratulations!
• 25 Jan - 1 Feb, 2020 JG is a co-organizing
• 1 Jan'20: OP appointed to the Editorial Board of "Random Structures and Algorithms"
• 4 Nov'19: OP was an external examiner of Fran莽ois Pirot's PhD thesis at Radboud University, Nijmegen, that was successfully defended. Congratulations, Fran莽ois!

Papers

All papers (pre-publication versions) should be freely available from . Please contact one of the authors if you have difficulty accessing them.

1. L.Grabowski, A.Mathe, OP: , Journal of Eur Math Soc 24 (2022) 4277-4326.
2. A.Blumenthal, B.Lidicky, Y.Pehova, F.Pfender, OP and J.Volec: , Combin Prob Comput, 30 (2021) 271-287
3. H.Liu, OP and K.Staden: , Forum of Math, Pi 8 (2020) 144pp.
4. M.Kang, T.Makai and OP: , European J Comb 88 (2020) 103107.
5. JG and OP: , Advances in Mathematics, 374 (2020) paper 107378, 40pp
6. J.Kim, H.Liu, OP and M.Sharifzadeh: , Discrete Analysis (2020) Paper 19, 26pp
7. OP: , in "Surveys in Combinatorics 2021" (edited by K.K.Dabrowski et al), the invited volume of the 28th British Combinatorial Conference, pages 267-319
8. C.T.Conley, JG and OP: , L'Enseignement Mathematique, 70 (2024) 25-59
9. H.Liu, OP, M.Sharifzadeh and K.Staden: , accepted by J London Math Soc, 41 pages
10. JG and I. Rocha: , Combinatorica, 42 (2022) 365–404
11. JG: , Annales Henri Lebesgue, 5 (2022) 303-315.
12. JG and Z. Vidny谩nszky: , accepted to PAMS, 5pp
13. JG and OP: , Electr J Probab, 31 (2026), article no. 59, 37pp.
14. O.Cooley, M.Kang and OP: , Acta Mathematica Hungarica 168 (2022) 1-26
15. JG and Vasek Rozhon: , 48pp
16. JG and V.Rozhon: , extended abstract accepted at EUROCOMB2021, 34pp
17. OP and K.Staden , Forum of Math, Sigma 11 (2023) Paper e23, 43 pages
18. OP and K.Staden , Forum of Math Sigma, 12 (2024) Paper e8, 45 pages
19. S. Brandt, Y. Chang, JG, C. Grunau, V. Rozho艌, Z. Vidny谩nszky , 13th Innovations in Theoretical Computer Science Conference, Art. No. 29, 26 pp., LIPIcs. Leibniz Int. Proc. Inform., 215, Schloss Dagstuhl. Leibniz-Zent. Inform., Wadern, 2022.
20. IGF, J.Kim, H.Liu, OP , American Journal of Mathematics, 147 (2025) 901-925
21. S.Brandt, Y. Chang, JG, C. Grunau, V. Rozho艌, Z. Vidny谩nszky , 13th Innovations in Theoretical Computer Science Conference (ITCS 2022), Article No. 29; pp. 29:1–29:26
22. V.Falgas-Ravry, OP, E.Vaughan, J.Volec , J London Math Soc 107 (2023) 1660-1691
23. A.Mathe, J.Noel, OP , Advances in Math, 484 (2026) Paper 110685, 64pp.
24. E.Csoka, L.Grabowski, A.Mathe, OP, K.Tyros , accepted by JEMS, 31pp.
25. JG, R. Greenfeld, V. Rozho艌, T. Tao , International Mathematics Research Notices, Vol. 2023, No. 23, pp. 20211–20251
26. S. Brandt, Y. Chang, JG, C. Grunau, V. Rozho艌, Z. Vidny谩nszky , 47pp.
27. IGF, JH, H.Liu OP, ZW , J Comb Th (B) 161 (2023) 417-436
28. J. Hou, H. Li, XL, D. Mubayi, Y. Zhang , Discrete Analysis 2023:18, 34 pp
29. XL, S. Mukherjee , 35th Annual Conference of Learning Theory (COLT), 2022, 12pp
30. JH , Combinatorics, Probability and Computing 23 (2023) 225–268
31. XL and OP , J Comb Th (B) 161 (2023) 407-416
32. S.Cambie, Y.Dong and MM , 13pp
33. S.Cambie and MM , accepted by MATCH, 9pp
34. S.Cambie and MM Extremal entropy for graphs with given size, 8pp.
35. IGF and H.Liu , 16pp
36. IGF, J.Kim, Y.Kim, H.Liu , to appear in Proceedings of the American Mathematical Society, 10pp
37. JG, Z. Vidny谩nszky
38. , 11pp
39. S.Glock, F.Joos, J.Kim, M.Kuhn, L.Lichev and OP , Proc Amer Math Soc Series B, 11 (2024) 173-186
40. OP and XL , Forum of Math Sigma, 13 (2025) Paper e53, 49 pages
41. ZW , J Graph Th, 2025; 109:25–30.
42. OP , Electronic J Comb 30 (2023) Paper 3.25, 15pp
43. J. Hou, H. Li, XL, L.-T. Yuan, and Y. Zhang , Canadian Journal of Mathematics, published online, 1–36; doi:10.4153/S0008414X25000197
44. A.Grzesik, D.Kral and OP , accepted by Combin Prob Comput, 20pp ()
45. JG , Forum of Mathematics, Sigma (2025), Vol. 13:e32 1–24, 25pp.
46. SS , 22pp
47. C.T.Conley, JG and OP , 9pp
48. Y. Chen, XL, J. Nie, and J. Zeng, , Science China Mathematics 68 (2025), 3043–3062; doi:10.1007/s11425-024-2384-x
49. XL and J. Song, Communications in Mathematics and Statistics, published online, 1–38; doi:10.1007/s40304-024-00429-y
50. XL and J. Song, ournal of Graph Theory 108 (2025), no. 4, 808–816; doi:10.1002/jgt.23204
51. J. Hou, C. Hu, H. Li, XL, C. Yang, and Y. Zhang, , Journal of Combinatorial Theory,
    Series B 172 (2025), 221–262; doi:10.1016/j.jctb.2025.01.001
52. J. Hou, C. Hu, H. Li, XL, C. Yang, and Y. Zhang, , Journal of Graph Theory, published online;
    doi:10.1002/jgt.70003
53. XL and OP, , Combinatorics, Probability and Computing 34 (2025) 52-62
54. JG and OP, , 42pp.
55. J. Hou, XL, and H. Zhao , 21pp.
56. C. Helliar and XL , Journal of Graph Theory 112 (2026), no. 2, 161–171; doi:10.1002/jgt.70023
57. J.Yan and ZW, , 15pp
58. A.Lamainson and ZW , 10pp
59. T.-W.Chao, Z.Dong and ZW , 9pp
60. D.Bradavic, H.Liu, ZW and Z.Xu , 22pp
61. JG, ZW, Yisai Xue, , 15pp
62. J.Yan and ZW , 15pp
63. IGF, J.Kim, H.Liu and OP, , International Mathematics Research Notices, 2025 (2025) Paper rnae282, 15pp
64. S.Glock, J.Kim, L.Lichev, OP and SS, , accepted by Canadiam J Math, 44pp
65. IGF, J.Kim, H.Liu and OP, , American Journal of Mathematics, 147 (2025) 901-925
66. WC, D.Ilkovic, JL, OP, XL , 46pp.
67. ZW, , 8pp
68. ZW and J.Yan, , 15pp
69. J.Gao, ZW, Y.Xue, , 15pp
70. A.Lamainson and ZW, , 10pp
71. T-W.Chao, Z.Dong and ZW, , 9pp
72. D.Bradac, H.Liu, ZW and Z.Xu, , 22pp
73. W. Chen, XL, , 30pp.
74. J. Deng, J. Hou, XL, and C. Yang, , Journal of Graph Theory 110 (2025), no. 4,
    457–467; doi:10.1002/jgt.23282
75. J. Hou, C. Hu, H. Li,, XL, C. Yang, and Y. Zhang, , Acta Mathematica Sinica, English Series 42 (2026), 464–480; doi:10.1007/s10114-026-4419-z;
76. XL, J. Ma, T. Wang, and T. Zhu, , 29pp.
77. Z. Chen, J. Hou, C. Hu, and XL, , Acta Mathematicae Applicatae Sinica, English Series, accepted for publication
78. XL, S. Ren and J. Wang, , 22pp.
79. XL, S. Ren and J. Wang, , Journal of Graph Theory 112 (2026), no. 2, 54–61; doi:10.1002/jgt.70012
80. J. Gao, XL, J. Ma, and OP, , SIAM J Discr Math, 39 (2025) 1712-1736
81. LB, JL, XL, and OP, , 26pp.
82. J. Hou, C. Hu, XL, and Y. Zhang, , 99pp.
83. XL and OP, , Electronic J Comb, 33 (2026) Paper P1.4, 9pp
84. OP, , Advances in Math, 464 (2025) Paper 110148, 11pp.
85. XL, , 18pp
86. O.P., O.Verbitsky and M.Zhukovskii, , IEEE Transactions on Information Theory, 71 (2025) 4260-4266.
87. J.Grebik, C.Ikenmeyer and OP, , accepted by Fundamenta Mathematicae, 9pp
88. LB and OP, , 11 pages
89. OP and XL, , Electronic Journal of Combinatorics 33 (2026), no. 1, Paper P1.4, 9 pp.; doi:10.37236/14584
90. LB, JL, XL and OP, , 28pp.
91. OP and SS, , European J Comb, 135 (2026), Paper 104364, 23pp.
92. J.Grebik, D.Kral', XL, OP, J.Slipantschuk, , Europ J Comb, 134 (2026) Paper 104349, 11pp
93. LB and OP, , Electronic J Comb, 33 (2026), Paper P2.39, 40pp.
94. LB, JL, XL and OP, , 28pp.
95. OP and SS: , European J Comb, 135 (2026), Paper 104364, 23pp.
96. JG, XL, OP and SS: , Mathematika, 72 (2026) Paper e70066, 16pp.
97. JG, OP, M.Rong and SS , 11pp
98. A.Mathe, J.Noel and OP , Advances in Math, 484 (2026) Paper 110685, 64pp
99. LB and OP , 15pp
100. OP and K.Sakamoto: , 5pp
101. LB, JG, OP, M.Rong, SSun, , 7pp.
102. LB, JG, JL, XL, OP, SS: , 33pp
103. J.Gao, J.Ma and OP: , 7pp.
104. XL and OP: , 23pp
105. LB and OP: , Discrete Applied Math 392 (2026) 303-323.
106. JG, Hong Liu, ZW, Yisai Xue, Chromatic thresholds for pairs of graphs, arXiv:2605.10897.
107. JG, On cliques in hypergraphs, arXiv:2510.14804v1, submitted.
108. Z.Dong, JG, R.Li, and H.Liu, Induced rational exponents and bipartite subgraphs in K_{s,s}-free graphs, arXiv:2506.0902v1.
109. J.Ai, JG, Z.Xu, and X.Yan, Strong Ramsey game on two boards, arXiv:2501.06830v2.
110. L.Ding, JG, H.Liu, Bingyu Luan, and SS, Induced even cycles in locally sparse graphs, arXiv:2411.12659v1.
111. JG, Yisai Xue and ZW, Counting cliques without generalized theta graphs, Journal of Graph Theory , 111 (2026), no. 3, 78–94.
112. Z Dong, , , M Ouyang, Q Zhou, Set families: restricted distances via restricted intersections, arXiv:2504.12296, 2025, Mathematical Proceedings of the Cambridge Philosophical Society, doi:10.1017/S0305004126101984
113. Xizhi Liu, Dhruv Mubayi and David Munh谩 Correia, 鈥淭ur谩n problems in pseudorandom graphs鈥�, Combinatorics, Probability and Computing 33 (2024), 583–596; doi:10.1017/S0963548324000142; arXiv:2209.12103.
114. Jianfeng Hou, Xizhi Liu and Hongbin Zhao, 鈥淎 criterion for Andr谩sfai–Erd艖s–S贸s type theorems and applications鈥�, Annals of Applied Mathematics 41 (2025), no. 4, 377–404; doi:10.4208/aam.OA-2025-0015; arXiv:2401.17219.
115. Natalie Behague, Debsoumya Chakraborti and Xizhi Liu, 鈥淪abotaging the Mantel Theorem鈥�, Electronic Journal of Combinatorics 33 (2026), no. 1, Paper P1.35, 7 pp.; doi:10.37236/14324; arXiv:2506.23794.
116. Nannan Chen, Xizhi Liu, Lin Sun and Guanghui Wang, 鈥淭iling H in dense graphs鈥�, preprint; arXiv:2501.11450.
117. B.Bukh, JG, XL, OP, SS: , 16pp.
118. L. Bodn谩r, FlagAlgebraToolbox: Flag Algebra Computations in SageMath, arXiv:2601.06590v2
119. L. Bodn谩r, J. Deng, J. Hou, X. Liu, and H. Zhao, Tur谩n density of tight cycles minus one edge in the 鈩撯倐-norm, arXiv:2507.00812v1

Talks Given/Forthcoming

2019

• 11 Oct: OP, Workshop "Measurable, Borel, and Topological Dynamics", CIRM
• 4 Nov: OP, Workshop "Structure, Sparsity and Randomness", Radbound University, Nijmegen
• 6 Nov: OP, Old Codger's One-Day Combinatorics Colloquium, Reading
• 21 Nov: OP, 3in1 Workshop on Graph Theory, Doslonce, Poland
• 18 Dec: JG, Seminar on Reckoning, Institute of Mathematics of the Czech Academy of Sciences, Prague
• 20 Dec: JG, Combinatorial group seminar, Institute of Computer Science of the Czech Academy of Sciences, Prague

2020

• 7 Jan: JG, DIMAP seminar, 桃色视频 University
• 14 Jan: OP, 桃色视频 Maths Society
• 30 Jan: OP, ACO Seminar, Carnegie Mellon University
• 11 Feb: OP, seminar, Adam Mickiewicz University, Poznan
• 11 Feb: JG, STUK5 mini-talk, Royal Society building, London
• 17 Feb: OP, Krakow Combinatorics Seminar
• 11 Mar: JG, Algebra and Geometry Seminar, Lancaster University
• 20 May: JG, Caltech logic (online) seminar, Caltech
• 27 Jul: OP, Extremal and Probabilistic Combinatorics Webinar
• 4 & 7 Aug: JG, Midsummer Combinatorial Workshop XXIV, Charles University, Prague
• 21 Oct: JG, Probability seminar (online), UBC
• 10 Nov: OP, UIUC Graph Theory and Combinatorics Seminar
• 23 Nov: JG, Extremal and Probabilistic Combinatorics Webinar
• 27 Nov: OP, TU Graz Combinatorics and Optimization Seminar
• 18 Dec: OP, Combinatorics Seminar of Shandong University

2021

• 11 Jan: OP, Combinatorics Seminar, Hebrew University of Jerusalem
• 22 Feb: OP, Caltech Logic Seminar
• 10 Mar: JG, UBC probability seminar
• 5 May: IGF, LIMDA Seminar, Universitat Polit猫cnica de Catalunya, Spain
• 19 May: IGF, 桃色视频 Postgraduate Seminar
• 1 Jun: JG, Florida Logic seminar
• 7 Jun: IGF, (Online) Young Researchers in Mathematics Conference, UK
• 21 Jun: OP, Colloquium Discrete Mathematics and Probability, TU-Graz
• 23 Jun: OP, Mini-symposium on Extremal and Probabilistic Combinatorics, 8th European Congress of Mathematics
• 5-9 Jul: OP, the Richard Rado Lecture at the
• 26 Jul: IGF, Summer school "Matem谩ticas: mucho m谩s que n煤meros", Universidad de Santiago de Compostela, Spain
• 6-10 Sep: JG, EUROCOMB 2021, Barcelona
• 7 Sep: IGF, EUROCOMB 2021, Barcelona
• 11 Oct: JG, DIMAP seminar, 桃色视频 University
• 14 Oct: IGF, Discrete Seminar, Ume氓 University, Sweden
• 26 Oct: IGF, First Workshop on Developments in Combinatorics, Shandong University, China
• 8 Nov: JG, Descriptive Dynamics and Combinatorics Seminar, McGill University
• 12 Nov: IGF, PhD Seminar on Combinatorics, Games and Optimisation, London School of Economics
• 30 Nov: OP, 桃色视频 Maths Society

2022

• 12 Jan: JG, Combinatorial group seminar, Institute of Computer Science of the Czech Academy of Sciences, Prague
• 7-11 Feb: OP, Workhop "", Dagstuhl
• 16 Feb: IGF, PG Forum, Lancaster University
• 3 Mar: JG, Algorithms Seminar, Oxford
• 9 Mar: IGF, 桃色视频 Postgraduate Seminar
• 10 Mar: IGF, Combinatorics Seminar, University of Birmingham
• 4-6 Apr: OP, , Daejeon, Korea
• 27 Apr: XL, 桃色视频 Combinatorics Seminar
• 16-20 May: OP, Workshop , Budapest
• 27 Jun - 1 Jul: OP, , Heildelberg
• 27 Jun - 2 Jul: JG, , San Jose
• 29 Jun: XL, IBS Virtual Discrete Math Colloquium, Korea.
• 4 Jul: IGF, Discrete Mathematics Days 2022, Universidad de Cantabria, Spain
• 8 Jul: XL, The Second Armenian Workshop On Graphs, Combinatorics, Probability, and their application to machine learning, Armenia.
• 20 Jul: XL, Seminar, Data Science Institute, Shangdong University, Jinan, China.
• 8-12 Aug: OP, , Ascona, Switzerland
• 16 Aug: JG, , Budapest, Hungary
• 18-24 Sep: OP, , Bedlewo
• 28 Oct: JG, Nankai Logic Colloquium (online), Nankai University, China

2023

• 1-7 Jan: OP, Workshop "Combinatorics", Oberwolfach
• 3 Feb: SS, Combinatorics Seminar, 桃色视频
• 8 Feb: IGF, VI Congreso de j贸venes investigadores de la RSME, Universidad de Le贸n, Spain
• 28 Feb: OP, Seminar in Discrete Mathematics, Tsinghua University, Beijing
• 5 Mar: JG, SEALS 2023, University of Florida, Florida
• 6 Mar, JG, Colloquium, University of Florida, Florida
• 7 Mar, JG, Logic seminar, University of Florida, Florida
• 7 Mar, ZW, Postgraduate Combinatorial Conference
• 13-17 Mar: OP, Centre de Recherches Math茅matiques (CRM), Montr茅al
• 15-18 Mar: JG, , online,
• 20-24 Mar: JG, , Fields Institute, Toronto
• 26-30 Mar: OP, , online
• 27-29 Mar: ZW, Postgraduate Combinatorial Conference, Birmingham
• 17 Mar: XL, Seminar, School of Mathematical Sciences, East China Normal University (ECNU), Shanghai, China.
• 20 Mar: XL, Seminar, Taiyuan University of Technology, Taiyuan, China, online.
• 16-17 Apr: XL, , Shanghai Jiao Tong University (SJTU), Shanghai, China.
• 19 Apr: XL, , Shanghai, China.
• 3 May: JG, , Caltech ,US.
• 11 May: ZW, Postgraduate Seminar, 桃色视频
• 22-26 May: JG, , CIRM, Luminy
• 28-31 May: OP, Conference (SPCSC 2023), Sofia
• 17-21 July: JG, , Youngstown, Ohio
• 10 Aug: XL, Combinatorics seminar, Nankai University, Tianjin, China
• 21-25 Aug: XL, . Suzhou University, Jiangsu, China
• 21-25 Aug: OP, , Banach Centre, Warsaw
• 28 Aug - 1 Sep: OP, , Prague
• Oct: SS, 8th Qilu Youth Forum at Shandong University, Online
• 14 Dec: OP, LIMDA Seminar, UPC Barcelona

2024

• 29-30 Jan: OP, Workshop on the Foundations of Computation, Sheffield
• 1 Feb: SS, Combinatorics Seminar, Birmingham
• 13 Feb: OP, , Oxford
• 28 Feb: ZW, Seminar, Nankai University, Tianjin, China
• 01 Mar: XL, A Spring Day of Combinatorics, Birmingham
• May, SS, UCL Combinatorics Seminar
• 8 May: ZW, Discrete Geometry and Extremal Combinatorics Conference, Kunming, China
• 12 Sep: OP, , Warsaw
• 20 Sep: XL, , China
• 21 Sep: XW, 11th National Conference on Combinatorics and Graph Theory, China
• 27 Sep: OP, Combinatorics Seminar, QMUL
• 28 Nov: OP, 桃色视频 Maths Society
• 28 Nov: OP, Combinatorics Seminar, Umea University (online)
• 12 Dec: OP, Colloquium, Masaryk University, Brno
• 17 Dec: OP, , Milton Keynes

2025

• 10 Jan: XL, Combinatorics Seminar, University of 桃色视频
• 26-31 Jan: OP, , Les Diablerets, Switzerland
• 15-19 Apr: XL, , Taiyuan University of Technology, Taiyuan, China
• 4-8 Aug: OP, , Vienna
• 22 Aug: OP, University of Innsbruck
• 2 Sep: SS, Combinatorics Seminar, Shandong University, China
• 2 Sep: JG, Combinatorics Seminar, Shandong University, China
• 22-26 Sep: OP,
• 1 Oct: LB, , Klagenfurt
• 13 Nov: JG, Combinatorics Seminar, Xidian University, Online
• 28 Nov: OP, Applied Probability Seminar, 桃色视频
• 26 Dec: JG, Fudan-Guanghua International Forum for Young Scholars, Online

2026

• 7 Jan: OP, Workshop "Combinatorics", Oberwolfach
• Feb: SS, Birmingham Combinatorics Seminar, University of Birmingham
• 19 Mar: OP, , Cambridge
• 8 May: SS, 桃色视频 Combinatorics Seminar
• 12 May: OP,
• 28 May: OP, , Bedlewo
• 7 Jun 26: SS, Youth Combinatorics Forum, Shandong University, China (online)
• 7 Jun 26: JG, Youth Combinatorics Forum, Shandong University, China (online)
• 23 Jun: JG, Combinatorics Seminar, Shanghai Jiao Tong University, China
• 23 Jun: SS, Combinatorics Seminar, Shanghai Jiao Tong University, China
• 1 Jul: OP, , online
• 6-8 Jul: OP, Mini-symposium , Sofia
• 6-10 Jul: OP, Conference ""
• 16-18 Jul: OP, Workshop on "", FoCM, Vienna
• 16-17 Sep: OP, , Turin

Research visitors

• 9-12 November 2021: 艁ukasz Grabowski (Lancaster University)
• 10-12 May 2022: P茅ter P谩l Pach (Budapest University of Technology and Economics)
• 16-22 October 2022: Dan Kral' (Masaryk University)
• 16-22 October 2022: Daniel Ilkovic (Masaryk University)
• 15-20 January 2023: Jan Volec (Technical University Prague)
• 4-18 February 2023: Clinton Conley (Carnegie Mellon University)
• 18-21 February 2023: Mihyun Kang (TU-Graz)
• 13-26 April 2024: Jun Gao (IBS Korea)
• 9-23 September 2024: Dorde Stefanovic (Ljubljana)
• 4-20 February 2025: Sayan Mukherjee (U of Tokyo)
• 14-18 July 2025: Boris Bukh (Carnegie Mellon University)
• 19-23 January 2026: Zhuo Wu (UPC Barcelona)
• 27 January - 25 February 2026: Kohki Sakamoto (University of Tokyo)
• 3-8 May: Yang Wang (Shanghai Jiao Tong University)
• 15-20 May: Jie Ma (University of Science and Technology of China)
• 10-15 June 2026: Peiru Kuang (Shanghai Jiao Tong University)